#613C55
Closest named color: Purple Brown (#673A3F). oklch(40.9% 0.064 339.7), rgb(97, 60, 85).
Aa
White text reads best on this color (9.18:1).
About this color
#613C55 is a dark, muted purple. In OKLCH its lightness is 41%, its chroma 0.064 and its hue 340°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.037 away. White text reads best on it, at 9.18:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | muted (0.064) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.28:1 |
| White text | 9.18:1 |
Values
| HEX | #613C55 |
| RGB | rgb(97, 60, 85) |
| HSL | hsl(319, 24%, 31%) |
| OKLCH | oklch(40.9% 0.064 339.7) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #613C55 | 9.18:1 | AAA | Lc -95.4 | Preferred for body text |
| Black text on #613C55 | 2.28:1 | Fails | Lc 12.9 | Not readable |
| #613C55 text on white | 9.18:1 | AAA | Lc 91.0 | Preferred for body text |
| #613C55 text on black | 2.28:1 | Fails | Lc -11.3 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 800.
-
Step 50
50
#F8F4F6
oklch(97.1% 0.005 345.3)
-
Step 100
100
#EFE7EC
oklch(93.6% 0.011 339.3)
-
Step 200
200
#E3D4DD
oklch(88.5% 0.02 340.7)
-
Step 300
300
#D2B8C8
oklch(81% 0.037 340.5)
-
Step 400
400
#BB93AC
oklch(70.8% 0.059 340.8)
-
Step 500
500
#A97798
oklch(63% 0.077 339.9)
-
Step 600
600
#946083
oklch(55.7% 0.083 339.7)
-
Step 700
700
#7E4F6F
oklch(49.2% 0.077 339.5)
-
Step 800
800 (this color)
#613C55
oklch(40.9% 0.064 339.7)
-
Step 900
900
#53374A
oklch(37.6% 0.049 339.2)
-
Step 950
950
#31202B
oklch(26.9% 0.032 340.5)
#613C55 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #3D4456 | 0.065 |
| Deuteranopia (no green cones) | #464A54 | 0.060 |
| Tritanopia (no blue cones) | #653D45 | 0.029 |
| Achromatopsia (no color) | #484848 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #613C55
#613C55
oklch(40.9% 0.064 339.7)
- #27553E
#27553E
oklch(41% 0.064 159.9)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #613C55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.037
- Brownish Purple #76424E ΔE 0.049
- Charcoal Grey #3C4142 ΔE 0.078
- Dusty Grape #545775 ΔE 0.081
- Dusk #4E5481 ΔE 0.088
- Dark Mauve #874C62 ΔE 0.089
- Dark Grey Blue #29465B ΔE 0.091
- Onyx #343A40 ΔE 0.091
Use #613C55 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.